Questions tagged [cipher]

A cipher is a simple method of modifying messages to make them unreadable except to readers who know the key. Common ciphers are Caesar, Vigenere, Atbash, and several types of substitution cipher. Other ciphers include polygraphic ciphers such as Playfair and Foursquare and numerical ciphers such as Polybius and Nihilist. Cipher puzzles sometimes make use of data encodings like Morse, Binary, or Base64.

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A simple and quite fun cipher puzzle

Don't worry, this is my creation :) Goal of this puzzle: Decrypt the puzzle to find out what the secret (final) message is. Each part of the puzzle depends on the previous part (except for the first)....
CrSb0001's user avatar
  • 2,241
12 votes
1 answer
511 views

a numerical headline

I picked up the English-language version of the popular tabloid Bild von Affen, and was surprised to see this headline. What does it mean? 1 69 39 64 13 71,   46 27 6 12 61 33   7 74 32 24 44 47   25 ...
msh210's user avatar
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3 votes
1 answer
342 views

An anagrammed logic puzzle!

ot rleow utbrctsa aacpilt hwti dioiatdn het ryuo s-bcBPEFfJDfeFmksmPOkChDhrgBqjD-i---ffeNB
nomad.lw's user avatar
  • 139
12 votes
2 answers
703 views

A sudokey and 14 messages

This puzzle is part of the Monthly Topic Challenge #15: Multi Puzzle — two (or more) puzzles in one. Remarks: Feel free to post partial solutions. This is a multi-puzzle: If you found the titular 14 ...
Retudin's user avatar
  • 8,789
1 vote
1 answer
230 views

Cheese from Denmark

You'll need "cheese from denmark" for this cipher puzzle. Denmark Portugal 1/2 France "hello" ?AI EBOM AEEDY EHT SEOU EPNHS TNHG OS EPNHS "F" AN AI SEBOM SSEHÆ AI ...
poco's user avatar
  • 2,208
3 votes
0 answers
150 views

The Mono-Quantum Condrum

You are presented with a locked box, and on its surface, you notice a sequence of peculiar symbols: ⌬ ⌅ ⊙ ⊡ Next to the symbols, there's an inscription: ...
Aitzaz Imtiaz's user avatar
0 votes
1 answer
182 views

Good cipher with a "password"?

I'm starting to create a puzzle, but I'm going to need a cipher that will be impossible (or at least very difficult) to crack, but can be easily decoded with a key. I first looked at the one-time pad ...
Blue Herring's user avatar
  • 1,491
2 votes
1 answer
245 views

#TenderfootSpiral

Clues: Two hikers on an incline arrow with numbers. Hiker 1 says: 38.548493. Hiker 2 says: -105.998749. Sequence: Hiker 17711 Hiker 0 377 0 144 1 10946 233 987 0 2584 6765 75025 Hiker = ...
Tyler's user avatar
  • 1,093
15 votes
1 answer
853 views

A Trivial Pursuit #07 (Geography 2/4): String Theory

This is part 7 of A Trivial Pursuit, a 25-part puzzle hunt. Each part is solvable on its own, with the exception of the meta-puzzle at the end. If e* t* u* v* w* x* y* is H... What relevant (if ...
Stiv's user avatar
  • 142k
2 votes
1 answer
353 views

Find the ciphering method 4

Link to the entire series. The message: ...
web adventurer's user avatar
6 votes
1 answer
395 views

Find the ciphering method 2

Link to the entire series. The message: 3, 53, 48751, 9247757, 294914580539 The answer is a 13 letter word: UNDERSTANDING Hint 1:
web adventurer's user avatar
2 votes
1 answer
290 views

Find the ciphering method using deciphered message

Link to the entire series. Ciphered message: ...
web adventurer's user avatar
12 votes
1 answer
349 views

Seems like a metaphor

Let's Draw! STEP 1 DDD DDD STEP 2 VVD DCC STEP 3 N VVD DCC U STEP 4 ...
poco's user avatar
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-5 votes
1 answer
236 views

Decipher a long sequence of numbers

51699624576811268526783109824167925197245652924177251787241782538786302873119768312852668312686625268245686752824473216878253830287925175273039778250852831287672527245665263006725397251762529312811498 ...
web adventurer's user avatar
14 votes
1 answer
519 views

An X x X Slitherlink related to X

This puzzle is part of the Monthly Topic Challenge #13: Variety Slitherlinks. The final answer is a six letter word. Prefer no partial answers. penpa
Amoz's user avatar
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8 votes
3 answers
626 views

The End of the Desert Sauce

Transcript Clues: [map compass containing "19!"] 3336665555556669 84433 7777833255 777728822233 8666 77773333 944666 933 64444448 2233 +---+---+---+---+---+ +---+---+---+---+---+ | | 3 | 4 | 5 | ...
Tyler's user avatar
  • 1,093
13 votes
1 answer
708 views

6 types of puzzles I like

I like puzzles where you find out about something interesting. Mike Wilks I like image editing puzzles. I like code puzzles, where the code is not that obvious. Pakistan Dance Omega Beans Cricket ...
poco's user avatar
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-5 votes
1 answer
204 views

This is a message encoded in a rather obscure foreign language. What language is it and what's the riddle's solution?

The following message contains a riddle written in an encrypted form of a rather obscure language lacking a literary standard that is rarely spoken today. What does it mean and what is the solution to ...
Galactic's user avatar
  • 243
4 votes
0 answers
371 views

Cryptogram or Anagram

ArenETalagooD fanemiPhOdl Clues: The answer is 7 characters Answer can include the following characters: a-z, ...
nomad.lw's user avatar
  • 139
-1 votes
1 answer
338 views

Kidnapper? Some Spacing needed

Prologue You are coming home from work, happy with your current coding progress (you are a coding and maths prodigy), but then you get kidnapped... You wake up after some hours of sleep in the ...
WOWOW's user avatar
  • 422
2 votes
1 answer
160 views

The Poem's in the Wires

Here's one I thought folks here might appreciate. It'll require a combination of codebreaking (or codefinding) and a tiny dab of cryptic mindset. What poem is written below? For bonus points, provide ...
ConnieMnemonic's user avatar
4 votes
2 answers
671 views

A historical cipher

You are born in the time of 100 BC. Now what? gvcwndxphufrcshvrtfrnhwnircssynbntnwnnglcufnbgwrf
poco's user avatar
  • 2,208
5 votes
2 answers
920 views

Decrypt from b to a

You are coding on your laptop, and check your inbox. You see an email: ...
WOWOW's user avatar
  • 422
4 votes
1 answer
538 views

Help a woman from ancient Rome find out how her husband is doing

Let's go back 2000 years. A woman named Valeria received a strange message from her husband Claudius who is a frumentarius. The message: ...
web adventurer's user avatar
4 votes
0 answers
334 views

Relax, I’m Kidnapped! - Part 2

Part 1: Relax, I’m Kidnapped! - Part 1 You manage to solve the crossword, and you show your captor the answers. “Well, you solved it…but I’m not done yet. Go to my room,” he replies. He directs you to ...
misc544's user avatar
  • 309
3 votes
2 answers
190 views

Mathematical Codebreaking

I've created a number-sequence puzzle and dressed it up as a cipher puzzle. The following message has been intercepted. You suspect it begins with the words ...
codewarrior0's user avatar
  • 6,762
9 votes
1 answer
601 views

Digit and (Digit) are different!

A, B, C and D are four different single digit numbers. It is given that: A + B = D A - B = C It is also given that: A × B = (B) C × CD = (D) Questions: Decode why B and D are enclosed in brackets. ...
chandanr777 's user avatar
5 votes
1 answer
395 views

Hidden composer

Today I wanted to make a "logo" for a composer. I liked logos with deeper meaning so I had gone ahead and tried this design: What composer was I trying to make a logo for?
poco's user avatar
  • 2,208
10 votes
1 answer
416 views

Coded human body parts

The table gives information about some of the human body parts. The names of the body parts are all coded and the count of those body parts present in a normal human are given. Coded body part Count ...
chandanr777 's user avatar
4 votes
0 answers
498 views

To get the answer, you'll have to get the key first

Below there is a cipher hidden in the text. Read everything very carefully. As far as I know, it will give the necessary hint. Look for some patterns: Let nobody distract you. Eventually, you will see ...
Lezzup's user avatar
  • 5,096
15 votes
2 answers
917 views

Hiking Circuits

This is part 27 of the puzzle series Around the World in Many Days. Each part is solvable on its own. Dear Puzzling, How have you been? Today I have toured the coastal towns and islands of a major ...
Jafe's user avatar
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13 votes
1 answer
399 views

Squares in another alien language

Inspired by this puzzle. In a newly discovered alien language, the following phrases are the pronunciations for the square numbers up to 100 (1, 4, 9, 16 .. 100). Match each phrase with the ...
ApexPolenta's user avatar
  • 2,690
6 votes
0 answers
470 views

Find the secret 7-letter message embedded within this message (unsolved)

Background This puzzle was originally from a puzzle contest for the USC Viterbi Magazine that is now over, but the answers have not been posted. My friends and I have been working on it for weeks, but ...
Kyle He's user avatar
  • 449
3 votes
0 answers
164 views

encode in encode

Today, a cryptic message was received by Area 51: Bananatexteismarvellous605185682252125223459314283216133301 2 The staff managed to figure out that some 2 digit ...
BETABOT's user avatar
  • 31
1 vote
1 answer
267 views

A take on custom ciphers

There is something hidden in the text below. Can you find out what it is? Note: no computers or tedious work required. ...
DL33's user avatar
  • 779
9 votes
1 answer
914 views

What did I do wrong?

My friend and I were bored so we decided to play a game of chess. I lost, for I have done something bad. I was a beginner, so I could not find where I went wrong. I wanted to know what was wrong, so I ...
poco's user avatar
  • 2,208
10 votes
2 answers
693 views

Cosmic circles and the celestial key

These seven cosmic circles appeared in the night sky: For some reason, I was reminded of something my great uncle gave me long ago. It was like a disk, but he called it a "celestial key". ...
SlowMagic's user avatar
  • 13.8k
4 votes
1 answer
200 views

The answer is a specific PSE question

uxymu uxymu gry'c drobo xykr xykr gry xykr zvkmo s mkx czoxn dyxsqrd The answer is a question you can find only on this site.
poco's user avatar
  • 2,208
7 votes
1 answer
294 views

Find the next number in these series..?

1, 1, 1, 1, 2, 2, 2, 2, 2, 5, 4, ? 2, 4, 6, 10, 15, 26, ? 71, 194, 38, 1701, 89, 76, ? 5303944, 6677714, 2070936216988528558, ? 1, 2, 3, 6, 9, 9, 16, 20, 18, 30, ? You know, there is more than ...
poco's user avatar
  • 2,208
5 votes
2 answers
2k views

Letters represented as 3-digit numbers

The following cipher appears on the box of a puzzle called "Fire" from Pyro Puzzles: I know nothing about decryption, so I was hoping one of you would be able to help decrypt it. Thanks in ...
Jade's user avatar
  • 61
1 vote
1 answer
280 views

Decode the ANSWER. Can you do it?

In some code the word EXAM is written as OVSG and TEST is written as ZOAZ then the word ANSWER is written in that code as: I tried to figure it out and it's harder than I expected. Admittedly though, ...
Satya's user avatar
  • 113
21 votes
1 answer
597 views

Guardian serpent of the ancient pyramid

According to legend, if you are pure of heart you will be able to see the Serpent of the Pyramid and through your labor reveal her true letters and know her wisdom.
SlowMagic's user avatar
  • 13.8k
11 votes
1 answer
325 views

#cipherpuzzlesarecool

The image tells you everything. 1.6.3.8.926.1.759 751 578. (8, 5) hint:
poco's user avatar
  • 2,208
10 votes
0 answers
663 views

A funny looking cipher puzzle

What secrets does this jester hold? Hints are found down the road. A hint, or rather, that what is held transcribed:
Mark Marketing's user avatar
1 vote
0 answers
286 views

Find how this finite sequence completes

7 14 31 51 70 81 104 107 129 149 155 175 192 215 238 259 279 299 301 301 314 328 350 372 Inspired by the discussion with the author of, and the clues to its solution are in that discussion: What ...
Nick Myra's user avatar
5 votes
2 answers
351 views

Single word answer cipher 1

DPOHS BUVMB UJPOT UIFGJ STUIB MGJTX IBUJT MFGU: U TOB PD EB QL C Z TTF U LU XI P B F O U SOL V Hint 1: As this is my first puzzle, I greatly welcome feedback.
Mike's user avatar
  • 101
11 votes
2 answers
1k views

Important Alien Message

A strange alien transcript, alongside what is believed to be a partial key, was recovered the other day. Scientists aren't sure what the message might contain, but theories point to some sort of ...
ExecutionByFork's user avatar
6 votes
1 answer
206 views

A message from The Federation of Binary Robots

The Federation of Binary Robots had a message, but their binary to English programme malfunctioned. Can you decipher it? ...
The Empty String Photographer's user avatar
1 vote
1 answer
189 views

A mysterious message from space

A friend of yours calls you late one night, seemingly very excited about something. He's speaking quickly, and you can't really make out what he's trying to tell you. From what you can understand, he ...
Blue Herring's user avatar
  • 1,491
3 votes
1 answer
175 views

A binary number and the last cell

01011000010001100100010000110001001100000011010000111000001101010011011100110110 What could this mean? Take a screenshot once you have decoded and plotted it. Hint:
The Empty String Photographer's user avatar

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